APA (7th ed.) Citation

Hafner, E. M., Fowler, J. M., & Williams, C. A. (1970). Environmental education 1970. Scientists' Institute for Public Information.

Chicago Style (17th ed.) Citation

Hafner, Everett M., John M. Fowler, and Curtis Alvin Williams. Environmental Education 1970. New York: Scientists' Institute for Public Information, 1970.

MLA (8th ed.) Citation

Hafner, Everett M., et al. Environmental Education 1970. Scientists' Institute for Public Information, 1970.